Fire-back plate



(No Model.) 2 Sheets-Sheet 1. M. H. MeDOWELL.

FIRE BACK PLATE.

No. 397,742, Patented Feb. 12, 1889.

BY ATTORNEY.

Nita STATES arnnr @FFICE.

MAGIL-UJENE ll. MCDOWELL, OF IJEXIN t'ltDI, KENIWKY.

FIRE.=BACK PLATE.

SPECIFICA'IZON forming part of Letters Patent No. 397,742, dated Iiebruary 12, 1889.

Application filed April 28, 1888. serial No. 272,162. (No model.)

To all whom, it may concern.-

Be it known that I, MAGDALENE II. No- DOWELL, a citizen of the United States, residing at Lexington, in the county of lrayettc and State of Kentucky, have invented certain new and useful Improvements in Fire-Back Plates, of which the following is a specification, reference being had therein to the aceompanyin g drawin My improvement relates to that class of tire-back plates designed for heating other rooms besides that in which the fire-place is located; and the invention consists in the peculiar construction, arrangement, and combination of parts hereinafter more particularly described, and then (lefinitely pointed out in the claims.

In the accompanying drawings, Figure 1 shows a vertical central transverse section of a tire-place and chimney between two rooms supplied with my invention. Fig. 2 is a similar section of a. lire-place and chimney in an outside wall olf a house. Fig. 3 .is a perspective view of the back-plate detached. Fit, isa modification of the same. Fig. 5 is a perspective view of a chimney having my improvement, with part broken away. Fig. 6 is a plan of the same on the line a: a, Fig. 7. Fig. 7 is a section on a smaller scale, showing the connection with the upper apartments of the house. Fig. 8 is a section on the line y g of Fig. 7.

Referring now to the details of the drawings by letter, A represents the radiating backplate set below the chimney-flue H, and consistingof a casting substantially of the shape shown, and preferably corrugated to add to the stiffness and to give more heating-s11 rface. Heavy boiler-iron may be used, in which case I prefer that it shall be riveted together at (7, below which point only one thickness of the iron need extend, it preterred.

Inside the fire-back I provide a partil ion, 1, which is preferably made adjustable by a rack-bar, R, and pinion S, and at D are shown plates built into the brick-work of the chimney and extending across side air-ll ties/I, into the fire-back, so as to make the air pass into the interior of the fire-back.

To utilize the fire-back to the utmost, I sometimes add a hot-air flue, F, as shown in dotted lines in Figs. 1, 3, and T, which will carry the heated air in the tire-back to a room above that in which the grate is located. .I also in some cases perforate the opposite side of the lire-back. at G, so as to allow a portion of the heated air to pass up into the hot-air flue H; or there may be sufficient space left between the side wall and ends of the radiator to allow the hot air to pass into the hot-air fine. This applies more particularly to outside chimneys.

Air may be admitted to the outside of the tire-back through apertures J J or J.

l ly moving the partition P in difi'erent positions more or less of the heated air may be turned into the different upper rooms; or if the partition is moved close to one of the plates I),inost, it not all, of the heated air will be turned into the opposite upper room. By this construction great economy of fuel is obtained, for with one fire four or more rooms may be heated, for the room in which the fire is located willot' course be heated by direct; radiatitm ot the heat from the iireiu the grate K, the room at the back of the grate will be h ated by radiation from the tire-back, while the rooms above these will be heated by the air that rises through the lines 'I at either side of. the fire-place, as shown in Figs. 5 and 7, and also by the heated air 1 hat rises through the fine H.

I do not wish to be limited to the exact form of grate shown, as it is evident that any form of tire or heating device maybe used, from the old-fashioned andirons and liiack-log to the most ornate grate or stove.

Although I have described the ill'O-bitfik as inade ot cast-iron or boiler-iron, it is evident that any metal may be used, if desired, and in some cases I may make the fire-back of burnished copper, brass, nickel, or other bright metal, which would make the rear side ornamental and be very useful in a narrow hall vertical and resting upon the floor, its upper chambers above may be heated by a single part inclined outward at D and then inclined inward again to form. an air-chan'iber, and

having a flat surface above said inwardly-inclined part to forin a support for the bricks I of the ll ue, substalltially as described.

3. The combination, with a chimney arranged br-tween two chmnbers and having" substantiz'ill equal )1 )enings into the oppo- I site chambers, of adouble radiating lire-back fire, substantially as described.

5. The combination, with a chimney having side air-fines, of a hollow fire-back open at each end and two plates built into the masonry of the fines and extending into the interior of the fire-back, substantially as and for the purpose specified.

6. The combination, with a chimney and a hollow fire-back, of air-flues leading into and out of said fire-back, and a movable partition arranged between the opposite ends of said fire-back, constructed to vary the size of the in one of said chambers, whereb the two chambers on the same floor and one or more air- .)assag'e through said fire-back, substan tially as and for the pin-pose specified.

In testimony whereof I at'iix m y signature, in presence of two witnesses, this 25th day of April, tsss,

W it n esses:

GEO. W. DARNALL, WM. (APTUS GooDLoE. 

